What is a cutaneous abscess
Christopher Lucas
Published Mar 09, 2026
A cutaneous abscess is a localized collection of pus in the skin and may occur on any skin surface. Symptoms and signs are pain and a tender and firm or fluctuant swelling. Diagnosis is usually obvious by examination. Treatment is incision and drainage. (See also Overview of Bacterial Skin Infections.
What causes a cutaneous abscess?
Common causes of a skin abscess Staphylococcus is the most common bacterial cause of skin abscesses. A skin abscess can be the result of a bacterial infection that occurs when Staphylococcus aureus bacteria enter the body through a hair follicle or through a wound or injury that has punctured or broken the skin.
What does an abscess under the skin look like?
A skin abscess looks much like a pimple, but it is larger. It is also usually deeper under the skin. Abscesses contain pus or clear fluid and typically do not pose a threat to a person’s health. Larger abscesses may require medical intervention, but they are not necessarily dangerous.
What happens if a skin abscess is left untreated?
Skin abscesses are usually not dangerous and disappear on their own with time. In some cases, they may need to be drained or removed by a doctor. If left untreated, abscesses can spark an infection that spreads throughout your body, and can be life-threatening.What does an abscess look like?
Abscesses usually are red, swollen, and warm to the touch, and might leak fluid. They can develop on top of the skin, under the skin, in a tooth, or even deep inside the body. On top of the skin, an abscess might look like an unhealed wound or a pimple; underneath the skin, it may create a swollen bump.
What happens when a skin abscess bursts?
After surrounding the bacteria, the white blood cells die, forming pus. As pus collects, it pushes healthy tissue aside. Walls of tissue eventually grow around the abscess to prevent the infection spreading. If an abscess ruptures (bursts) internally, the infection may spread inside the body or under the skin surface.
How painful is a skin abscess?
Most often, an abscess becomes a painful, compressible mass that is red, warm to touch, and tender. As some abscesses progress, they may “point” and come to a head so you can see the material inside and then spontaneously open (rupture). Most will continue to get worse without care.
What happens to pus if not drained?
If a skin abscess is not drained, it may continue to grow and fill with pus until it bursts, which can be painful and can cause the infection to spread or come back.Can stress cause an abscess?
Dental abscesses and stress ‘An abscess can sometimes occur during times of stress, as your body’s ability to fight off infections can become compromised,’ says Dr Marques.
What color pus is bad?Pus is a thick fluid that usually contains white blood cells, dead tissue and germs (bacteria). The pus may be yellow or green and may have a bad smell. The usual cause is an infection with bacteria.
Article first time published onCan an abscess go away without draining?
A small skin abscess may drain naturally, or simply shrink, dry up and disappear without any treatment. However, larger abscesses may need to be treated with antibiotics to clear the infection, and the pus may need to be drained.
How long can an abscess go untreated?
The Danger of Untreated Infected Teeth and Gums What could be the possible effect of an untreated dental abscess? An infection in your body is considered a threat. If they are not treated, they can last for several months or years.
What is the black stuff that comes out of an abscess?
The black spot is a keratin plug which connects with the underlying cyst. An abscess is a collection of pus that has built up within the tissue of the body.
Can you pop an abscess?
If you think you have a skin abscess, avoid touching, pushing, popping, or squeezing it. Doing that can spread the infection or push it deeper inside the body, making things worse. Try using a warm compress to see if that opens up the abscess so it can drain.
Can abscess heal on its own?
Often, a skin abscess will not heal on its own without further intervention by a health care provider. Initially, an abscess may feel firm and hardened (indurated), at which time incision and drainage may not be possible.
How do you treat a skin abscess?
- Apply warm and dry compresses, a heating pad set on low, or a hot water bottle 3 or 4 times a day for pain. …
- If your doctor prescribed antibiotics, take them as directed. …
- Take pain medicines exactly as directed.
- Keep your bandage clean and dry. …
- If the abscess was packed with gauze:
What can I put on an abscess to draw it out?
Poultice for abscess The moist heat from a poultice can help to draw out the infection and help the abscess shrink and drain naturally. An Epsom salt poultice is a common choice for treating abscesses in humans and animals. Epsom salt helps to dry out the pus and cause the boil to drain.
What's the difference between a boil and an abscess?
Boils are superficial infections with a thin layer of skin over fluid. Abscesses are generally larger and deeper with redness and painful swelling over an area filled with pus. Cellulitis is an infection within the skin and the area just beneath it; the skin is red and tender to touch.
What's the difference between a cyst and an abscess?
Difference between cyst and abscess. While a cyst is a sac enclosed by distinct abnormal cells, an abscess is a pus-filled infection in your body caused by, for example, bacteria or fungi. The main difference in symptoms is: a cyst grows slowly and isn’t usually painful, unless it becomes enlarged.
What does pus look like?
Pus is a whitish-yellow, yellow, or brown-yellow protein-rich fluid called liquor puris that accumulates at the site of an infection. It consists of a buildup of dead, white blood cells that form when the body’s immune system responds to the infection.
Do popped boils smell?
If it does burst, a person may notice yellow, unpleasant-smelling pus.
Does pus have a smell?
Depending on the location and type of infection, pus can be many colors, including white, yellow, green, and brown. While it sometimes has a foul smell, it can also be odorless.
What causes abscess in groin area?
Hidradenitis suppurativa (HS) is a painful, long-term skin condition that causes abscesses and scarring on the skin. The exact cause of hidradenitis suppurativa is unknown, but it occurs near hair follicles where there are sweat glands, usually around the groin, bottom, breasts and armpits.
Why do I keep getting abscesses in my groin area?
A vaginal boil (also called a furuncle or skin abscess) is a painful, pus-filled bump that develops under the skin in your pubic area. It usually happens when the bacteria Staphylococcus aureus (commonly called staph) infects the sacs that contain the roots of your hair and oil glands (hair follicles).
What is the yellow fluid that leaks from wounds called?
Serosanguineous is the term used to describe discharge that contains both blood and a clear yellow liquid known as blood serum. Most physical wounds produce some drainage. It is common to see blood seeping from a fresh cut, but there are other substances that may also drain from a wound.
What cream is good for abscess?
Put antibiotic cream or ointment on the skin 3 to 4 times a day, unless something else was prescribed. Some ointments include an antibiotic plus a pain reliever.
What does Brown pus mean?
The greenish color is a result of the bacterial pigment pyocyanin that it produces. Amoebic abscesses of the liver produce brownish pus, which is described as looking like “anchovy paste”. Pus from anaerobic infections can more often have a foul odor.
Why do boils stink?
In some cases the boil may smell unpleasant, which is usually when the boil drains and this is caused by the existence of bacteria within the pus.
Why does heat draw out pus?
Heat draws more blood, and so more whites cells, to the affected area and encourages pore dilation and release of pus.
What antibiotics treat skin abscess?
For patients who decide to initiate antibiotic treatment, reasonable choices include either TMP-SMX or clindamycin. In some settings, cephalosporins or other antibiotics are often prescribed for skin abscesses.
What antibiotic is used for abscess?
- Amoxicillin.
- Azithromycin.
- Cefoxitin.
- Metronidazole.
- Penicillin.